1403431 has 4 divisors (see below), whose sum is σ = 1413000. Its totient is φ = 1393864.

The previous prime is 1403429. The next prime is 1403443. The reversal of 1403431 is 1343041.

1403431 = 13² + 14² + ... + 161².

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1403431 - 2¹ = 1403429 is a prime.

It is a super-2 number, since 2×1403431² = 3939237143522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1403411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4561 + ... + 4858.

It is an arithmetic number, because the mean of its divisors is an integer number (353250).

2^1403431 is an apocalyptic number.

1403431 is a deficient number, since it is larger than the sum of its proper divisors (9569).

1403431 is an equidigital number, since it uses as much as digits as its factorization.

1403431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9568.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 1403431 is about 1184.6649315313. The cubic root of 1403431 is about 111.9602058882.

Adding to 1403431 its reverse (1343041), we get a palindrome (2746472).

The spelling of 1403431 in words is "one million, four hundred three thousand, four hundred thirty-one".